Hertz
Bits
Bytes
Mega bytes
Magnetic tapes
Magnetic drums
Semiconductor memory
Magnetic disks
3.5’
5.25’
2’
8’
Duplicating ROM
Erasing and reconstructing the contents of ROM
Reconstructing the contents of ROM
Erasing the contents of ROM
Direct storage
Sequential storage
Volatile storage
Non-volatile storage
1024 bytes
1024 megabytes
Million megabytes
Thousand kilobytes
speed
Price
Reliability
All of these
Static
Dynamic
Bubble
Both a & b
VRAM
DDRSDRAM
EDORAM
FPM DRAM
The same amount
A fourth as much
Half as much
Thrice as much